vbox_mode.c@ 61602

Last change on this file since 61602 was 61596, checked in by vboxsync, 9 years ago

bugref:4567: Linux kernel driver maintenance:
drm/vboxvideo: Initialize data needed to map fbdev memory

Due to a missing initialization there was no way to map fbdev memory.
Thus for example using the Xserver with the fbdev driver failed.
This fix adds initialization for fix.smem_start and fix.smem_len
in the fb_info structure, which fixes this problem.

Signed-off-by: Egbert Eich <eich@…>
Signed-off-by: Egbert Eich <eich@…>

Property svn:eol-style set to native
Property svn:keywords set to Author Date Id Revision

File size: 28.4 KB

Line
1	/* $Id: vbox_mode.c 61596 2016-06-09 06:11:14Z vboxsync $ */
2	/** @file
3	* VirtualBox Additions Linux kernel video driver
4	*/
5
6	/*
7	* Copyright (C) 2013 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	* --------------------------------------------------------------------
17	*
18	* This code is based on
19	* ast_mode.c
20	* with the following copyright and permission notice:
21	*
22	* Copyright 2012 Red Hat Inc.
23	* Parts based on xf86-video-ast
24	* Copyright (c) 2005 ASPEED Technology Inc.
25	*
26	* Permission is hereby granted, free of charge, to any person obtaining a
27	* copy of this software and associated documentation files (the
28	* "Software"), to deal in the Software without restriction, including
29	* without limitation the rights to use, copy, modify, merge, publish,
30	* distribute, sub license, and/or sell copies of the Software, and to
31	* permit persons to whom the Software is furnished to do so, subject to
32	* the following conditions:
33	*
34	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
37	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
38	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
39	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
40	* USE OR OTHER DEALINGS IN THE SOFTWARE.
41	*
42	* The above copyright notice and this permission notice (including the
43	* next paragraph) shall be included in all copies or substantial portions
44	* of the Software.
45	*
46	*/
47	/*
48	* Authors: Dave Airlie <[email protected]>
49	*/
50	#include "vbox_drv.h"
51
52	#include <VBox/VBoxVideo.h>
53
54	#include <linux/export.h>
55	#include <drm/drm_crtc_helper.h>
56	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0)
57	# include <drm/drm_plane_helper.h>
58	#endif
59
60	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
61	uint32_t handle, uint32_t width, uint32_t height,
62	int32_t hot_x, int32_t hot_y);
63	static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
64
65	/** Set a graphics mode. Poke any required values into registers, do an HGSMI
66	* mode set and tell the host we support advanced graphics functions.
67	*/
68	static void vbox_do_modeset(struct drm_crtc *crtc,
69	const struct drm_display_mode *mode)
70	{
71	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
72	struct vbox_private *vbox;
73	int width, height, bpp, pitch;
74	unsigned crtc_id;
75	uint16_t flags;
76
77	LogFunc(("vboxvideo: %d: vbox_crtc=%p, CRTC_FB(crtc)=%p\n", __LINE__,
78	vbox_crtc, CRTC_FB(crtc)));
79	vbox = crtc->dev->dev_private;
80	width = mode->hdisplay ? mode->hdisplay : 640;
81	height = mode->vdisplay ? mode->vdisplay : 480;
82	crtc_id = vbox_crtc->crtc_id;
83	bpp = crtc->enabled ? CRTC_FB(crtc)->bits_per_pixel : 32;
84	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 3, 0)
85	pitch = crtc->enabled ? CRTC_FB(crtc)->pitch : width * bpp / 8;
86	#else
87	pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
88	#endif
89	/* This is the old way of setting graphics modes. It assumed one screen
90	* and a frame-buffer at the start of video RAM. On older versions of
91	* VirtualBox, certain parts of the code still assume that the first
92	* screen is programmed this way, so try to fake it. */
93	if ( vbox_crtc->crtc_id == 0
94	&& crtc->enabled
95	&& vbox_crtc->fb_offset / pitch < 0xffff - crtc->y
96	&& vbox_crtc->fb_offset % (bpp / 8) == 0)
97	VBoxVideoSetModeRegisters(width, height, pitch * 8 / bpp,
98	CRTC_FB(crtc)->bits_per_pixel, 0,
99	vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x,
100	vbox_crtc->fb_offset / pitch + crtc->y);
101	flags = VBVA_SCREEN_F_ACTIVE;
102	flags \|= (crtc->enabled && !vbox_crtc->blanked ? 0 : VBVA_SCREEN_F_BLANK);
103	flags \|= (vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0);
104	VBoxHGSMIProcessDisplayInfo(&vbox->submit_info, vbox_crtc->crtc_id,
105	crtc->x, crtc->y,
106	crtc->x * bpp / 8 + crtc->y * pitch,
107	pitch, width, height,
108	vbox_crtc->blanked ? 0 : bpp, flags);
109	VBoxHGSMIReportFlagsLocation(&vbox->submit_info, vbox->host_flags_offset);
110	LogFunc(("vboxvideo: %d\n", __LINE__));
111	}
112
113	static int vbox_set_view(struct drm_crtc *crtc)
114	{
115	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
116	struct vbox_private *vbox = crtc->dev->dev_private;
117	void *p;
118
119	LogFunc(("vboxvideo: %d: vbox_crtc=%p\n", __LINE__, vbox_crtc));
120	/* Tell the host about the view. This design originally targeted the
121	* Windows XP driver architecture and assumed that each screen would have
122	* a dedicated frame buffer with the command buffer following it, the whole
123	* being a "view". The host works out which screen a command buffer belongs
124	* to by checking whether it is in the first view, then whether it is in the
125	* second and so on. The first match wins. We cheat around this by making
126	* the first view be the managed memory plus the first command buffer, the
127	* second the same plus the second buffer and so on. */
128	p = VBoxHGSMIBufferAlloc(&vbox->submit_info, sizeof(VBVAINFOVIEW), HGSMI_CH_VBVA,
129	VBVA_INFO_VIEW);
130	if (p)
131	{
132	VBVAINFOVIEW pInfo = (VBVAINFOVIEW )p;
133	pInfo->u32ViewIndex = vbox_crtc->crtc_id;
134	pInfo->u32ViewOffset = vbox_crtc->fb_offset;
135	pInfo->u32ViewSize = vbox->vram_size - vbox_crtc->fb_offset
136	+ vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
137	pInfo->u32MaxScreenSize = vbox->vram_size - vbox_crtc->fb_offset;
138	VBoxHGSMIBufferSubmit(&vbox->submit_info, p);
139	VBoxHGSMIBufferFree(&vbox->submit_info, p);
140	}
141	else
142	return -ENOMEM;
143	LogFunc(("vboxvideo: %d: p=%p\n", __LINE__, p));
144	return 0;
145	}
146
147	static void vbox_crtc_load_lut(struct drm_crtc *crtc)
148	{
149
150	}
151
152	static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
153	{
154	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
155	struct vbox_private *vbox = crtc->dev->dev_private;
156
157	LogFunc(("vboxvideo: %d: vbox_crtc=%p, mode=%d\n", __LINE__, vbox_crtc,
158	mode));
159	switch (mode) {
160	case DRM_MODE_DPMS_ON:
161	vbox_crtc->blanked = false;
162	break;
163	case DRM_MODE_DPMS_STANDBY:
164	case DRM_MODE_DPMS_SUSPEND:
165	case DRM_MODE_DPMS_OFF:
166	vbox_crtc->blanked = true;
167	break;
168	}
169	mutex_lock(&vbox->hw_mutex);
170	vbox_do_modeset(crtc, &crtc->hwmode);
171	mutex_unlock(&vbox->hw_mutex);
172	LogFunc(("vboxvideo: %d\n", __LINE__));
173	}
174
175	static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
176	const struct drm_display_mode *mode,
177	struct drm_display_mode *adjusted_mode)
178	{
179	return true;
180	}
181
182	/* We move buffers which are not in active use out of VRAM to save memory. */
183	static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
184	struct drm_framebuffer *fb,
185	int x, int y, int atomic)
186	{
187	struct vbox_private *vbox = crtc->dev->dev_private;
188	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
189	struct drm_gem_object *obj;
190	struct vbox_framebuffer *vbox_fb;
191	struct vbox_bo *bo;
192	int ret;
193	u64 gpu_addr;
194
195	LogFunc(("vboxvideo: %d: fb=%p, vbox_crtc=%p\n", __LINE__, fb, vbox_crtc));
196	/* push the previous fb to system ram */
197	if (!atomic && fb) {
198	vbox_fb = to_vbox_framebuffer(fb);
199	obj = vbox_fb->obj;
200	bo = gem_to_vbox_bo(obj);
201	ret = vbox_bo_reserve(bo, false);
202	if (ret)
203	return ret;
204	vbox_bo_push_sysram(bo);
205	vbox_bo_unreserve(bo);
206	}
207
208	vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
209	obj = vbox_fb->obj;
210	bo = gem_to_vbox_bo(obj);
211
212	ret = vbox_bo_reserve(bo, false);
213	if (ret)
214	return ret;
215
216	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
217	if (ret) {
218	vbox_bo_unreserve(bo);
219	return ret;
220	}
221
222	if (&vbox->fbdev->afb == vbox_fb) {
223	/* if pushing console in kmap it */
224	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
225	if (ret)
226	DRM_ERROR("failed to kmap fbcon\n");
227	else
228	vbox_fbdev_set_base(vbox, gpu_addr);
229	}
230	vbox_bo_unreserve(bo);
231
232	/* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
233	vbox_crtc->fb_offset = gpu_addr;
234	if (vbox_crtc->crtc_id == 0) {
235	vbox->input_mapping_width = CRTC_FB(crtc)->width;
236	vbox->input_mapping_height = CRTC_FB(crtc)->height;
237	}
238	LogFunc(("vboxvideo: %d: vbox_fb=%p, obj=%p, bo=%p, gpu_addr=%u\n",
239	__LINE__, vbox_fb, obj, bo, (unsigned)gpu_addr));
240	return 0;
241	}
242
243	static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
244	struct drm_framebuffer *old_fb)
245	{
246	LogFunc(("vboxvideo: %d\n", __LINE__));
247	return vbox_crtc_do_set_base(crtc, old_fb, x, y, 0);
248	}
249
250	static int vbox_crtc_mode_set(struct drm_crtc *crtc,
251	struct drm_display_mode *mode,
252	struct drm_display_mode *adjusted_mode,
253	int x, int y,
254	struct drm_framebuffer *old_fb)
255	{
256	struct vbox_private *vbox = crtc->dev->dev_private;
257	int rc = 0;
258
259	LogFunc(("vboxvideo: %d: vbox=%p\n", __LINE__, vbox));
260	vbox_crtc_mode_set_base(crtc, x, y, old_fb);
261	mutex_lock(&vbox->hw_mutex);
262	rc = vbox_set_view(crtc);
263	if (!rc)
264	vbox_do_modeset(crtc, mode);
265	/* Note that the input mapping is always relative to the first screen. */
266	VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
267	vbox->input_mapping_width,
268	vbox->input_mapping_height);
269	mutex_unlock(&vbox->hw_mutex);
270	LogFunc(("vboxvideo: %d\n", __LINE__));
271	return rc;
272	}
273
274	static void vbox_crtc_disable(struct drm_crtc *crtc)
275	{
276
277	}
278
279	static void vbox_crtc_prepare(struct drm_crtc *crtc)
280	{
281
282	}
283
284	static void vbox_crtc_commit(struct drm_crtc *crtc)
285	{
286
287	}
288
289
290	static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
291	.dpms = vbox_crtc_dpms,
292	.mode_fixup = vbox_crtc_mode_fixup,
293	.mode_set = vbox_crtc_mode_set,
294	/* .mode_set_base = vbox_crtc_mode_set_base, */
295	.disable = vbox_crtc_disable,
296	.load_lut = vbox_crtc_load_lut,
297	.prepare = vbox_crtc_prepare,
298	.commit = vbox_crtc_commit,
299
300	};
301
302	static void vbox_crtc_reset(struct drm_crtc *crtc)
303	{
304
305	}
306
307
308	static void vbox_crtc_destroy(struct drm_crtc *crtc)
309	{
310	drm_crtc_cleanup(crtc);
311	kfree(crtc);
312	}
313
314	static const struct drm_crtc_funcs vbox_crtc_funcs = {
315	.cursor_move = vbox_cursor_move,
316	.cursor_set2 = vbox_cursor_set2,
317	.reset = vbox_crtc_reset,
318	.set_config = drm_crtc_helper_set_config,
319	/* .gamma_set = vbox_crtc_gamma_set, */
320	.destroy = vbox_crtc_destroy,
321	};
322
323	static struct vbox_crtc vbox_crtc_init(struct drm_device dev, unsigned i)
324	{
325	struct vbox_crtc *vbox_crtc;
326
327	LogFunc(("vboxvideo: %d\n", __LINE__));
328	vbox_crtc = kzalloc(sizeof(struct vbox_crtc), GFP_KERNEL);
329	if (!vbox_crtc)
330	return NULL;
331	vbox_crtc->crtc_id = i;
332
333	drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
334	drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
335	drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
336	LogFunc(("vboxvideo: %d: crtc=%p\n", __LINE__, vbox_crtc));
337
338	return vbox_crtc;
339	}
340
341	static void vbox_encoder_destroy(struct drm_encoder *encoder)
342	{
343	LogFunc(("vboxvideo: %d: encoder=%p\n", __LINE__, encoder));
344	drm_encoder_cleanup(encoder);
345	kfree(encoder);
346	}
347
348	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
349	static struct drm_encoder drm_encoder_find(struct drm_device dev, uint32_t id)
350	{
351	struct drm_mode_object *mo;
352	mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
353	return mo ? obj_to_encoder(mo) : NULL;
354	}
355	#endif
356
357	static struct drm_encoder vbox_best_single_encoder(struct drm_connector connector)
358	{
359	int enc_id = connector->encoder_ids[0];
360
361	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
362	/* pick the encoder ids */
363	if (enc_id)
364	return drm_encoder_find(connector->dev, enc_id);
365	LogFunc(("vboxvideo: %d\n", __LINE__));
366	return NULL;
367	}
368
369
370	static const struct drm_encoder_funcs vbox_enc_funcs = {
371	.destroy = vbox_encoder_destroy,
372	};
373
374	static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
375	{
376
377	}
378
379	static bool vbox_mode_fixup(struct drm_encoder *encoder,
380	const struct drm_display_mode *mode,
381	struct drm_display_mode *adjusted_mode)
382	{
383	return true;
384	}
385
386	static void vbox_encoder_mode_set(struct drm_encoder *encoder,
387	struct drm_display_mode *mode,
388	struct drm_display_mode *adjusted_mode)
389	{
390	}
391
392	static void vbox_encoder_prepare(struct drm_encoder *encoder)
393	{
394
395	}
396
397	static void vbox_encoder_commit(struct drm_encoder *encoder)
398	{
399
400	}
401
402
403	static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
404	.dpms = vbox_encoder_dpms,
405	.mode_fixup = vbox_mode_fixup,
406	.prepare = vbox_encoder_prepare,
407	.commit = vbox_encoder_commit,
408	.mode_set = vbox_encoder_mode_set,
409	};
410
411	static struct drm_encoder vbox_encoder_init(struct drm_device dev, unsigned i)
412	{
413	struct vbox_encoder *vbox_encoder;
414
415	LogFunc(("vboxvideo: %d: dev=%d\n", __LINE__));
416	vbox_encoder = kzalloc(sizeof(struct vbox_encoder), GFP_KERNEL);
417	if (!vbox_encoder)
418	return NULL;
419
420	drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
421	DRM_MODE_ENCODER_DAC
422	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)
423	, NULL
424	#endif
425	);
426	drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
427
428	vbox_encoder->base.possible_crtcs = 1 << i;
429	LogFunc(("vboxvideo: %d: vbox_encoder=%p\n", __LINE__, vbox_encoder));
430	return &vbox_encoder->base;
431	}
432
433	/** Generate EDID data with a mode-unique serial number for the virtual
434	* monitor to try to persuade Unity that different modes correspond to
435	* different monitors and it should not try to force the same resolution on
436	* them. */
437	static void vbox_set_edid(struct drm_connector *connector, int width,
438	int height)
439	{
440	enum { EDID_SIZE = 128 };
441	unsigned char edid[EDID_SIZE] = {
442	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
443	0x58, 0x58, /* manufacturer (VBX) */
444	0x00, 0x00, /* product code */
445	0x00, 0x00,0x00, 0x00, /* serial number goes here */
446	0x01, /* week of manufacture */
447	0x00, /* year of manufacture */
448	0x01, 0x03, /* EDID version */
449	0x80, /* capabilities - digital */
450	0x00, /* horiz. res in cm, zero for projectors */
451	0x00, /* vert. res in cm */
452	0x78, /* display gamma (120 == 2.2). */
453	0xEE, /* features (standby, suspend, off, RGB, standard colour space,
454	* preferred timing mode) */
455	0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
456	/* chromaticity for standard colour space. */
457	0x00, 0x00, 0x00, /* no default timings */
458	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
459	0x01, 0x01, 0x01, 0x01, /* no standard timings */
460	0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02, 0x02, 0x02,
461	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* descriptor block 1 goes here */
462	0x00, 0x00, 0x00, 0xFD, 0x00, /* descriptor block 2, monitor ranges */
463	0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
464	0x20, /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
465	0x00, 0x00, 0x00, 0xFC, 0x00, /* descriptor block 3, monitor name */
466	'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r', '\n',
467	0x00, 0x00, 0x00, 0x10, 0x00, /* descriptor block 4: dummy data */
468	0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
469	0x20,
470	0x00, /* number of extensions */
471	0x00 /* checksum goes here */
472	};
473	int clock = (width + 6) * (height + 6) * 60 / 10000;
474	unsigned i;
475	unsigned sum = 0;
476
477	edid[12] = width & 0xff;
478	edid[13] = width >> 8;
479	edid[14] = height & 0xff;
480	edid[15] = height >> 8;
481	edid[54] = clock & 0xff;
482	edid[55] = clock >> 8;
483	edid[56] = width & 0xff;
484	edid[58] = (width >> 4) & 0xf0;
485	edid[59] = height & 0xff;
486	edid[61] = (height >> 4) & 0xf0;
487	for (i = 0; i < EDID_SIZE - 1; ++i)
488	sum += edid[i];
489	edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
490	drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
491	}
492
493	static int vbox_get_modes(struct drm_connector *connector)
494	{
495	struct vbox_connector *vbox_connector = NULL;
496	struct drm_display_mode *mode = NULL;
497	struct vbox_private *vbox = NULL;
498	unsigned num_modes = 0;
499	int preferred_width, preferred_height;
500
501	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
502	vbox_connector = to_vbox_connector(connector);
503	vbox = connector->dev->dev_private;
504	if (vbox_connector->vbox_crtc->crtc_id == 0)
505	vbox_enable_caps(vbox);
506	if (!vbox->initial_mode_queried) {
507	if (vbox_connector->vbox_crtc->crtc_id == 0) {
508	vbox->initial_mode_queried = true;
509	vbox_report_hotplug(vbox);
510	}
511	return drm_add_modes_noedid(connector, 800, 600);
512	}
513	num_modes = drm_add_modes_noedid(connector, 2560, 1600);
514	preferred_width = vbox_connector->mode_hint.width ? vbox_connector->mode_hint.width : 1024;
515	preferred_height = vbox_connector->mode_hint.height ? vbox_connector->mode_hint.height : 768;
516	mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height, 60, false,
517	false, false);
518	if (mode)
519	{
520	mode->type \|= DRM_MODE_TYPE_PREFERRED;
521	drm_mode_probed_add(connector, mode);
522	++num_modes;
523	}
524	vbox_set_edid(connector, preferred_width, preferred_height);
525	return num_modes;
526	}
527
528	static int vbox_mode_valid(struct drm_connector *connector,
529	struct drm_display_mode *mode)
530	{
531	return MODE_OK;
532	}
533
534	static void vbox_connector_destroy(struct drm_connector *connector)
535	{
536	struct vbox_connector *vbox_connector = NULL;
537
538	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
539	vbox_connector = to_vbox_connector(connector);
540	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
541	drm_sysfs_connector_remove(connector);
542	#else
543	drm_connector_unregister(connector);
544	#endif
545	drm_connector_cleanup(connector);
546	kfree(connector);
547	}
548
549	static enum drm_connector_status
550	vbox_connector_detect(struct drm_connector *connector, bool force)
551	{
552	struct vbox_connector *vbox_connector = NULL;
553
554	(void) force;
555	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
556	vbox_connector = to_vbox_connector(connector);
557	return vbox_connector->mode_hint.disconnected ?
558	connector_status_disconnected : connector_status_connected;
559	}
560
561	static int vbox_fill_modes(struct drm_connector *connector, uint32_t max_x, uint32_t max_y)
562	{
563	struct vbox_connector *vbox_connector;
564	struct drm_device *dev;
565	struct drm_display_mode mode, iterator;
566
567	LogFunc(("vboxvideo: %d: connector=%p, max_x=%lu, max_y = %lu\n", __LINE__,
568	connector, (unsigned long)max_x, (unsigned long)max_y));
569	vbox_connector = to_vbox_connector(connector);
570	dev = vbox_connector->base.dev;
571	list_for_each_entry_safe(mode, iterator, &connector->modes, head)
572	{
573	list_del(&mode->head);
574	drm_mode_destroy(dev, mode);
575	}
576	return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
577	}
578
579	static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
580	.mode_valid = vbox_mode_valid,
581	.get_modes = vbox_get_modes,
582	.best_encoder = vbox_best_single_encoder,
583	};
584
585	static const struct drm_connector_funcs vbox_connector_funcs = {
586	.dpms = drm_helper_connector_dpms,
587	.detect = vbox_connector_detect,
588	.fill_modes = vbox_fill_modes,
589	.destroy = vbox_connector_destroy,
590	};
591
592	static int vbox_connector_init(struct drm_device *dev,
593	struct vbox_crtc *vbox_crtc,
594	struct drm_encoder *encoder)
595	{
596	struct vbox_connector *vbox_connector;
597	struct drm_connector *connector;
598
599	LogFunc(("vboxvideo: %d: dev=%p, encoder=%p\n", __LINE__, dev,
600	encoder));
601	vbox_connector = kzalloc(sizeof(struct vbox_connector), GFP_KERNEL);
602	if (!vbox_connector)
603	return -ENOMEM;
604
605	connector = &vbox_connector->base;
606	vbox_connector->vbox_crtc = vbox_crtc;
607
608	drm_connector_init(dev, connector, &vbox_connector_funcs,
609	DRM_MODE_CONNECTOR_VGA);
610	drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
611
612	connector->interlace_allowed = 0;
613	connector->doublescan_allowed = 0;
614
615	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
616	drm_mode_create_suggested_offset_properties(dev);
617	drm_object_attach_property(&connector->base,
618	dev->mode_config.suggested_x_property, 0);
619	drm_object_attach_property(&connector->base,
620	dev->mode_config.suggested_y_property, 0);
621	#endif
622	#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
623	drm_sysfs_connector_add(connector);
624	#else
625	drm_connector_register(connector);
626	#endif
627
628	drm_mode_connector_attach_encoder(connector, encoder);
629
630	LogFunc(("vboxvideo: %d: connector=%p\n", __LINE__, connector));
631	return 0;
632	}
633
634	int vbox_mode_init(struct drm_device *dev)
635	{
636	struct vbox_private *vbox = dev->dev_private;
637	struct drm_encoder *encoder;
638	struct vbox_crtc *vbox_crtc;
639	unsigned i;
640	/* vbox_cursor_init(dev); */
641	LogFunc(("vboxvideo: %d: dev=%p\n", __LINE__, dev));
642	for (i = 0; i < vbox->num_crtcs; ++i)
643	{
644	vbox_crtc = vbox_crtc_init(dev, i);
645	if (!vbox_crtc)
646	return -ENOMEM;
647	encoder = vbox_encoder_init(dev, i);
648	if (!encoder)
649	return -ENOMEM;
650	vbox_connector_init(dev, vbox_crtc, encoder);
651	}
652	return 0;
653	}
654
655	void vbox_mode_fini(struct drm_device *dev)
656	{
657	/* vbox_cursor_fini(dev); */
658	}
659
660
661	/** Copy the ARGB image and generate the mask, which is needed in case the host
662	* does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
663	* if the corresponding alpha value in the ARGB image is greater than 0xF0. */
664	static void copy_cursor_image(u8 src, u8 dst, int width, int height,
665	size_t mask_size)
666	{
667	unsigned i, j;
668	size_t line_size = (width + 7) / 8;
669
670	memcpy(dst + mask_size, src, width * height * 4);
671	for (i = 0; i < height; ++i)
672	for (j = 0; j < width; ++j)
673	if (((uint32_t )src)[i width + j] > 0xf0000000)
674	dst[i * line_size + j / 8] \|= (0x80 >> (j % 8));
675	}
676
677	static int vbox_cursor_set2(struct drm_crtc crtc, struct drm_file file_priv,
678	uint32_t handle, uint32_t width, uint32_t height,
679	int32_t hot_x, int32_t hot_y)
680	{
681	struct vbox_private *vbox = crtc->dev->dev_private;
682	struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
683	struct drm_gem_object *obj;
684	struct vbox_bo *bo;
685	int ret, rc;
686	struct ttm_bo_kmap_obj uobj_map;
687	u8 *src;
688	u8 *dst = NULL;
689	u32 caps = 0;
690	size_t data_size, mask_size;
691	bool src_isiomem;
692
693	/* Re-set this regularly as in 5.0.20 and earlier the information was lost
694	* on save and restore. */
695	VBoxHGSMIUpdateInputMapping(&vbox->submit_info, 0, 0,
696	vbox->input_mapping_width,
697	vbox->input_mapping_height);
698	if (!handle) {
699	bool cursor_enabled = false;
700	struct drm_crtc *crtci;
701
702	/* Hide cursor. */
703	vbox_crtc->cursor_enabled = false;
704	list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head)
705	if (to_vbox_crtc(crtci)->cursor_enabled)
706	cursor_enabled = true;
707	if (!cursor_enabled)
708	VBoxHGSMIUpdatePointerShape(&vbox->submit_info, 0, 0, 0, 0, 0, NULL, 0);
709	return 0;
710	}
711	vbox_crtc->cursor_enabled = true;
712	if ( width > VBOX_MAX_CURSOR_WIDTH \|\| height > VBOX_MAX_CURSOR_HEIGHT
713	\|\| width == 0 \|\| height == 0)
714	return -EINVAL;
715	rc = VBoxQueryConfHGSMI(&vbox->submit_info,
716	VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
717	ret = -RTErrConvertToErrno(rc);
718	if (ret)
719	return ret;
720	if ( caps & VMMDEV_MOUSE_HOST_CANNOT_HWPOINTER
721	\|\| !(caps & VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE))
722	return -EINVAL;
723
724	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
725	obj = drm_gem_object_lookup(file_priv, handle);
726	#else
727	obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
728	#endif
729	if (obj)
730	{
731	bo = gem_to_vbox_bo(obj);
732	ret = vbox_bo_reserve(bo, false);
733	if (!ret)
734	{
735	/* The mask must be calculated based on the alpha channel, one bit
736	* per ARGB word, and must be 32-bit padded. */
737	mask_size = ((width + 7) / 8 * height + 3) & ~3;
738	data_size = width * height * 4 + mask_size;
739	vbox->cursor_hot_x = min((uint32_t)max(hot_x, 0), width);
740	vbox->cursor_hot_y = min((uint32_t)max(hot_y, 0), height);
741	vbox->cursor_width = width;
742	vbox->cursor_height = height;
743	vbox->cursor_data_size = data_size;
744	dst = vbox->cursor_data;
745	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
746	if (!ret)
747	{
748	src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
749	if (!src_isiomem)
750	{
751	uint32_t flags = VBOX_MOUSE_POINTER_VISIBLE
752	\| VBOX_MOUSE_POINTER_SHAPE
753	\| VBOX_MOUSE_POINTER_ALPHA;
754	copy_cursor_image(src, dst, width, height, mask_size);
755	rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags,
756	vbox->cursor_hot_x,
757	vbox->cursor_hot_y,
758	width, height, dst,
759	data_size);
760	ret = -RTErrConvertToErrno(rc);
761	}
762	else
763	DRM_ERROR("src cursor bo should be in main memory\n");
764	ttm_bo_kunmap(&uobj_map);
765	}
766	else
767	vbox->cursor_data_size = 0;
768	vbox_bo_unreserve(bo);
769	}
770	drm_gem_object_unreference_unlocked(obj);
771	}
772	else
773	{
774	DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
775	ret = -ENOENT;
776	}
777	return ret;
778	}
779
780	static int vbox_cursor_move(struct drm_crtc *crtc,
781	int x, int y)
782	{
783	struct vbox_private *vbox = crtc->dev->dev_private;
784	uint32_t flags = VBOX_MOUSE_POINTER_VISIBLE
785	\| VBOX_MOUSE_POINTER_SHAPE
786	\| VBOX_MOUSE_POINTER_ALPHA;
787	uint32_t host_x, host_y;
788	uint32_t hot_x = 0;
789	uint32_t hot_y = 0;
790	int rc;
791
792	/* We compare these to unsigned later and don't need to handle negative. */
793	if (x + crtc->x < 0 \|\| y + crtc->y < 0 \|\| vbox->cursor_data_size == 0)
794	return 0;
795	rc = VBoxHGSMICursorPosition(&vbox->submit_info, true, x + crtc->x,
796	y + crtc->y, &host_x, &host_y);
797	/* Work around a bug after save and restore in 5.0.20 and earlier. */
798	if (RT_FAILURE(rc) \|\| (host_x == 0 && host_y == 0))
799	return -RTErrConvertToErrno(rc);
800	if (x + crtc->x < host_x)
801	hot_x = min(host_x - x - crtc->x, vbox->cursor_width);
802	if (y + crtc->y < host_y)
803	hot_y = min(host_y - y - crtc->y, vbox->cursor_height);
804	if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
805	return 0;
806	vbox->cursor_hot_x = hot_x;
807	vbox->cursor_hot_y = hot_y;
808	rc = VBoxHGSMIUpdatePointerShape(&vbox->submit_info, flags, hot_x, hot_y,
809	vbox->cursor_width, vbox->cursor_height,
810	vbox->cursor_data,
811	vbox->cursor_data_size);
812	return -RTErrConvertToErrno(rc);
813	}

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source: vbox/trunk/src/VBox/Additions/linux/drm/vbox_mode.c@ 61602

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